doc: fix formatting issue in Google provider doc (#2907)

A missing line break caused subsequent list items to be squished into a single paragraph.

docs/docs/configuration/providers/google.md

@@ -59,6 +59,7 @@ account is still authorized.
     of this flag with different groups and the user will be checked against all the provided groups.
 
 (Only if using a JSON file (see step 1))
+
 9.  Lock down the permissions on the json file downloaded from step 1 so only oauth2-proxy is able to read the file and 
     set the path to the file in the `google-service-account-json` flag.
 10. Restart oauth2-proxy.

docs/versioned_docs/version-7.6.x/configuration/providers/google.md

@@ -59,6 +59,7 @@ account is still authorized.
     of this flag with different groups and the user will be checked against all the provided groups.
 
 (Only if using a JSON file (see step 1))
+
 9.  Lock down the permissions on the json file downloaded from step 1 so only oauth2-proxy is able to read the file and 
     set the path to the file in the `google-service-account-json` flag.
 10. Restart oauth2-proxy.

docs/versioned_docs/version-7.7.x/configuration/providers/google.md

@@ -59,6 +59,7 @@ account is still authorized.
     of this flag with different groups and the user will be checked against all the provided groups.
 
 (Only if using a JSON file (see step 1))
+
 9.  Lock down the permissions on the json file downloaded from step 1 so only oauth2-proxy is able to read the file and 
     set the path to the file in the `google-service-account-json` flag.
 10. Restart oauth2-proxy.